Miniaturized High-Speed FBG Interrogator on Photonic AWG Chip #Photonics #WorldResearchAwards
Introduction Arrayed waveguide gratings (AWGs) play a central role in fiber Bragg grating (FBG) interrogation systems, yet conventional AWG-based interrogators are typically bulky, complex, and difficult to deploy in harsh or space-constrained environments. These limitations restrict their applicability in advanced sensing scenarios requiring portability, robustness, and real-time response. This research addresses these challenges by presenting a highly miniaturized FBG interrogator based on a photonic AWG chip, designed to deliver high precision and high-speed wavelength demodulation for demanding engineering applications. Photonic AWG Chip Design and Miniaturization The core of the proposed system is an ultra-compact photonic AWG chip measuring only 280 µm × 150 µm. This chip-level integration significantly reduces system size while maintaining high spectral resolution. By embedding the AWG within a compact photonic chip module, the interrogator achieves substantial miniaturizati...